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cif-access (organic compounds)
The structure of the title compound was determined previously by Jones & Templeton [Acta Cryst. (1958), 11, 484] at T = 278 K
using the Weissenberg technique, and twice by Nahringbauer [Acta Chem. Scand.
(1970), 24, 453-462] at T = 278 and 93 K. The present redetermination at
T = 40 K provides data of higher precision, reflected in s.u.'s
which are about one third those of Nahringbauer.